There are many synonyms for the phrase "return life" that can be used to describe the restoration of vitality or energy. One such synonym is "renewal," which refers to the process of starting over and beginning anew. Another synonym is "revitalization," which describes the revitalization of something that has lost its energy or vigor. "Rejuvenation" is also a good synonym, as it implies the restoration of youthfulness and vitality. Other words that can be used as synonyms for "return life" are "resuscitation," "regeneration," and "reanimation." These words all convey a sense of revitalization and renewal that can be used to describe a variety of situations, from personal growth to environmental restoration.